[HIPIFY][fix] Fix for the warning -Winconsistent-missing-override

+ Fix for the warning: 'SourceRangeSkipped' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]

src/HipifyAction.cpp

@@ -2712,7 +2712,7 @@ class PPCallbackProxy : public clang::PPCallbacks {
     hipifyAction.Ifndef(Loc, MacroNameTok, MD);
   }
 
-  virtual void SourceRangeSkipped(clang::SourceRange Range, clang::SourceLocation EndifLoc) {
+  void SourceRangeSkipped(clang::SourceRange Range, clang::SourceLocation EndifLoc) override {
     hipifyAction.AddSkippedSourceRange(Range);
   }
 };